Drifloon

The sets:
*Disclaimer, I will try to list as few as possible pokemon that check it at 17 speed and try to list as many as possible for the boosted version.

--------Stall-Floon:
Ponyta, Magnemite, Chinchou, Porygon, Staryu, Omanyte/Clamperl, Torchic, Taillow, Lileep, Amaura, Lickitung and Larvitar. Other checks like SCARFED-<Name>, example Scarfed Shellder are valid checks but don't want to come in on all options it has like Will-O or itemless-Acro.
Sleep-Talk is also one way, pokemon like Skrelp, Munchlax, Chinchou and Mantyke/Wailmer get the job done.
Poor check examples include Anorith, Magby, Gastly, Frillish, LO Shadow Ball Abra etc. There are also other solid counters like Growlite/Buizel... but that's Growlite/Buizel and you should know why I don't list that thing and it's name sounds like Chiglett or with kuck.

Special note: Cottonee for Encore locking it~

--------Calm Mind/Hex set:
Pawniard, Vullaby, Porygon, Houndour, Scraggy, Ponyta, Larvesta, Larvitar, Chinchou(14SpD), Elekid.
Calm Mind only(Doesn't like Burn): Tirtouga, Munchlax Recycle, Onix, Dwebble, Deerling.

--------WP-Endure set:
Any status + A pokemon to take an Unboosted Acro/Shadow: Ponyta, Porygon, Snivy, Bronzor, Snubble, Foongus, Torchic/Vulpix(Will-O), Staryu etc. There is so much to note just because of the status part.
Also: Pawniard, Vullaby, Carvana(Sub), Torchic(Sub) and Sub Gastly. Scouting with Sub is more important with this set simply to prevent Will-O and see the movepool.

--------Baton/Calm Mind-Pass set:
Ponyta, Porygon(Stock only), Larvitar, Omanyte/Clamperl, Timburr(Calm Mind only), Shellos, Foongus, Cottonee, Whirl-Munchlax, Dragon Tail-Lickitung.
Unlike all the other ones this one is overflown with checks including strong hitters like Doduo, Pawniard etc. Mostly because of the lack of speed or the even more massive lack in defence because of not being invested into it in trade of more speed.
The issue with this one lies more in the passing of the stats if you just keep A Normal/Dark or Special wall alive.
Being worndown also relatively easly however it can take hits from about any ballenced pokemon even Magnemite with 15/16 rolls.
Set up pokemon like Dwebble/Tirtouga/Shellder need to be awair of Will-O-Wisp in order of being able to stop this.

Taunt Mienfoo/(Aipom...) can check this thing compleatly with Taunt, they if anything did just need to look out for getting burned then turn they come in.

--------Support set:
All exept: Bronzor, Munchlax, Chinchou. This set is to support, not to beat more pokemon then the other sets. Infact this set simply exists to do both Hazard removal and make some use of Drifloons utility in Stalling pokemon.

--------Specs-Trick set:
Besides lacking force at KO'ing Porygon/Lickitung this still has some use:
Beats Pawniard without Burning making the SD set impossible to screw you over. Also Vullaby as this unlike the Calm Mind set doesn't lose to it. It has flying stab!.... Yea....
See it like the Calm Mind set without most of the good possitives but immediat +1 force.
Trick is easly your best use for this however it kinda sucks in the same reguard simply because of you being unable to stall opponants properly besides if you trick Munchlax.
So objectively you beat: Pawniard, Munchlax, Lickitung and Vullaby with this set that all the others wouldn't allow you to. All other stuff is done better with literally every other set.

--------Offencive set:
If you run HP fight you beat some pokemon on the switch in while you also ruin priority users with Sucker Punch. Anything else is just EH in compairison to the normal set. You pretty much lack on the stall utility as full so picking up on a few KO's with Acro/Shadow you wouldn't other wise can be helpfull but doesn't really give you any solid numbers.